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Carmex Carbide Tiny Tool - Boring Bar - MTL - K20 Grade - 1.5mm Minimum Diameter x 6mm Reach x R0.1 (Left Hand)
| Application | Boring (MTL) |
| Minimum Diameter | 1.5 |
| Reach (L1) | 6 |
| Radius (R) | 0.1 |
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The ones our customers buy most.Description
The Carmex Carbide Tiny Tool - Boring Bar (MTL - K20 Grade) is a precision solid carbide bar designed for tiny internal boring and small-diameter turning. With a 1.5 mm minimum diameter, a 6 mm reach, and a left-hand orientation, it excels in confined bores and hard-to-reach features, delivering clean, accurate holes and consistent finishes.
Two coating options tailor performance to your workpiece: BXC, a PVD TiN-coated grade optimized for low cutting speeds and stainless steels (ISO P30–P50 / K25–K40); and BMK, a sub-micron grade with a triple PVD coating for exceptional heat resistance and smooth cutting across a broad range of materials.
- Ultra-compact precision for small bores: 1.5 mm minimum diameter and 6 mm reach enable accurate internal cuts in tight spaces with minimal tool deflection and excellent hole quality.
- Coating options tuned to material and speed: Choose BXC TiN for stainless steels at lower speeds or BMK’s triple PVD coating for higher heat resistance and smoother cutting across diverse materials.
- Rigid carbide construction for reliable results: Solid K20-grade carbide delivers stiffness and wear resistance, providing consistent performance and longer tool life across demanding turning and boring tasks.
This tiny boring bar is designed to streamline setups, reduce tool changes, and help you achieve precise, repeatable hole finishes. Its compact geometry, paired with purpose-built coatings and durable carbide, supports efficient workflows and reliable results in both stainless and general-purpose applications.
Part Numbers
- Protool Part Number
- MTL1.5R0.1L6K20
- Brand
- Carmex
- Category
- Tiny Tool Inserts
Delivery
Free UK mainland delivery on orders over £50 ex VAT. In-stock items ordered before 4:30pm are dispatched the same working day. Full delivery information.
Returns
14-day returns on unused stock items in original packaging. Special-order and bespoke tooling is non-returnable. Read our returns policy.
Technical Support
Over 30 years of machining experience behind the counter. Call 01732 887334, Mon–Thurs 8:30–17:30, Fri 8:30–16:30.
Trade Accounts
Credit accounts, contract pricing and scheduled call-off orders available for trade customers. Apply for an account.
What time are Protool open?
We are open Monday to Friday between 8:30am and 5pm.
Do you offer Free Next Day delivery?
Yes! We offer Free Next Day delivery via Royal Mail Tracked 24 on all orders over £50 ex VAT*. We also offer Free DPD Local Next Day delivery on all orders over £100 ex VAT*.
We also offer the following:
- Royal Mail Tracked 24 — £5.90 (FREE on orders over £50 ex VAT*). Order before 4:30pm for next day delivery. No signature required.
- DPD Local Next Day — £8.00 (FREE on orders over £100 ex VAT*). Standard next day delivery to UK mainland addresses.
- Royal Mail Special Delivery — £12.50. Guaranteed delivery before 1pm the next working day.
- DPD Saturday Delivery — £25.00. Must be ordered on Friday before 4pm. Pre-12pm delivery.
For delivery to Scottish Highlands & Islands, Northern Ireland, Republic of Ireland, or overseas locations, additional charges apply. Please see our delivery page for full details, or call us on 01732 887 334.
*T's & C's and exclusions apply. Please see our delivery page for more information on all our services.



